diff --git a/patches/minecraft/net/minecraft/client/gui/GuiVideoSettings.java.patch b/patches/minecraft/net/minecraft/client/gui/GuiVideoSettings.java.patch
new file mode 100644
index 000000000..a57fd0102
--- /dev/null
+++ b/patches/minecraft/net/minecraft/client/gui/GuiVideoSettings.java.patch
@@ -0,0 +1,15 @@
+--- ../src-base/minecraft/net/minecraft/client/gui/GuiVideoSettings.java
++++ ../src-work/minecraft/net/minecraft/client/gui/GuiVideoSettings.java
+@@ -107,4 +107,12 @@
+         this.func_73732_a(this.field_146289_q, this.field_146500_a, this.field_146294_l / 2, 5, 16777215);
+         super.func_73863_a(p_73863_1_, p_73863_2_, p_73863_3_);
+     }
++
++    // FORGE: fix for MC-64581 very laggy mipmap slider
++    @Override
++    public void func_146281_b()
++    {
++        super.func_146281_b();
++        this.field_146297_k.field_71474_y.onGuiClosed();
++    }
+ }
diff --git a/patches/minecraft/net/minecraft/client/settings/GameSettings.java.patch b/patches/minecraft/net/minecraft/client/settings/GameSettings.java.patch
index 318917e36..cbc4fad7f 100644
--- a/patches/minecraft/net/minecraft/client/settings/GameSettings.java.patch
+++ b/patches/minecraft/net/minecraft/client/settings/GameSettings.java.patch
@@ -16,6 +16,15 @@
          this.field_74324_K = (KeyBinding[])ArrayUtils.addAll(new KeyBinding[] {this.field_74312_F, this.field_74313_G, this.field_74351_w, this.field_74370_x, this.field_74368_y, this.field_74366_z, this.field_74314_A, this.field_74311_E, this.field_151444_V, this.field_74316_C, this.field_151445_Q, this.field_74310_D, this.field_74321_H, this.field_74322_I, this.field_74323_J, this.field_151447_Z, this.field_151457_aa, this.field_151458_ab, this.field_152395_am, this.field_178883_an, this.field_186718_X}, this.field_151456_ac);
          this.field_74318_M = EnumDifficulty.NORMAL;
          this.field_74332_R = "";
+@@ -265,7 +267,7 @@
+                 this.field_74317_L.func_147117_R().func_147633_a(this.field_151442_I);
+                 this.field_74317_L.func_110434_K().func_110577_a(TextureMap.field_110575_b);
+                 this.field_74317_L.func_147117_R().func_174937_a(false, this.field_151442_I > 0);
+-                this.field_74317_L.func_175603_A();
++                this.needsResourceRefresh = true; // FORGE: fix for MC-64581 very laggy mipmap slider
+             }
+         }
+ 
 @@ -887,7 +889,12 @@
                      {
                          if (s1.equals("key_" + keybinding.func_151464_g()))
@@ -48,7 +57,7 @@
              }
  
              for (SoundCategory soundcategory : SoundCategory.values())
-@@ -1250,4 +1259,24 @@
+@@ -1250,4 +1259,35 @@
              return p_148264_1_;
          }
      }
@@ -71,5 +80,16 @@
 +        field_151458_ab.setKeyConflictContext(inGame);
 +        field_186718_X.setKeyConflictContext(inGame);
 +    }
++
++    // FORGE: fix for MC-64581 very laggy mipmap slider
++    private boolean needsResourceRefresh = false;
++    public void onGuiClosed()
++    {
++        if (needsResourceRefresh)
++        {
++            this.field_74317_L.func_175603_A();
++            this.needsResourceRefresh = false;
++        }
++    }
 +    /******* Forge End ***********/
  }